.content {
  margin: 20px auto;
}

.content > div {
  display: none;
}

.content > div.active {
  display: block;
}

.content > div.off {
  height: 800px;
}

.content > .on > .top {
  height: 45px;
  background-color: pink;
  display: flex;
  align-items: center;
  padding: 0 20px;
  box-sizing: border-box;
}

.content > .on > .top > input {
  margin-right: 15px;
}

.content > .on > .bottom {
  height: 45px;
  background-color: pink;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  box-sizing: border-box;
}

.content > .on > .bottom > .btns > button {
  padding: 5px 10px;
  cursor: pointer;
}

.content > .on > .center {
  padding: 20px 0;
}

.content > .on > .center > li {
  height: 100px;
  border: 1px solid #333;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.content > .on > .center > li:last-child {
  margin-bottom: 0;
}

.content > .on > .center > li > .show,
.content > .on > .center > li > .destory,
.content > .on > .center > li > .select {
  width: 100px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.content > .on > .center > li > .title {
  width: 300px;
  display: flex;
  height: 100%;
  align-items: flex-start;
  box-sizing: border-box;
  padding: 5px;
}

.content > .on > .center > li > .price,
.content > .on > .center > li > .subPrice {
  width: 200px;
  font-size: 18px;
  color: red;
  text-align: center;
}

.content > .on > .center > li > .number {
  flex: 1;
  display: flex;
}

.content > .on > .center > li > .number > button {
  cursor: pointer;
  width: 30px;
  height: 30px;
  font-size: 18px;
}

.content > .on > .center > li > .number > input {
  width: 60px;
  height: 26px;
  margin: 0 5px;
  text-align: center;
  outline: none;
}
